baber/WOPTO huggingface dataset:
Patent GB-1111997-A (GB)
Title: Servo systems
Inventor: BRANDON MARTIN
IPC: G05B19/29
Filed: 1965-06-25
Abstract: 1,111,997. Servo system. MINISTER OF TECHNOLOGY. 22 June, 1966 [25 June, 1965], No. 27069/65. Heading G4H. In a servo system for controlling the position of, for example, an hydraulic jack, the actual position of which is fed in Gray's binary code from a position encoder 30 (Fig. 1) to a counter 31 and the required position of which is held in a reversible counter 35, the jack is driven to within a predetermined margin of the desired position and then a series of correcting cycles make successively nearer approximations. After conversion to binary code, the number in counter 31 is counted down to zero, pulses also being applied simultaneously to counter 35, which, if it reaches zero, gives a signal on line 36 and counts the remaining pulses positively. When counter 31 is at zero, the count in counter 35 which represents the modulus of the difference between the desired and actual position is either (1) greater than or equal to k (where k represents the predetermined margin), (2) less than k or (3) zero. In the first case one of the motors 70, 71 is energized under the control of the signal on lead 36 to drive the jack in the correct direction. In the second case, i.e. in a cycle in which the appropriate motor 70, 71 has driven the jack to near its correct position a brake 59 is energized whilst slow clock pulses from oscillator 36 are positively accumulated in counter 35 until it reaches a count of k when the brake is de-energized and the correct one of motors 70, 71 is re-energized and a fresh comparison made. As the actual position nears the desired position, the count in counter 35 when the counter 31 has been counted to zero decreases so that more pulses are necessary to bring the count back to k resulting in the brake being applied for successively longer periods. When the count is zero an output on lead 39 results in the brake being continuously applied.
Patent GB-1023409-A (GB)
Title: Improvements in or relating to noise evaluating circuit arrangements for use in telecommunication equipments
IPC: H04N5/21
Filed: 1964-07-02
Abstract: 1,023,409. Noise measurement TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT m.b.H. July 2, 1964 [July 9, 1963], No. 27296/64. Heading G1U. A noise evaluating circuit arrangement wherein a D.C. proportional to the amount of noise occurring above a given threshold level is required comprises a narrow band noise passing filter F to which the signal containing the noise to be evaluated is applied; a biased transistorised trigger Tr fed from the filter and arranged to respond to noise peaks exceeding a predetermined threshold value S (Fig. 2a), the trigger having a switching frequency greater than the highest frequency in the noise spectrum which the filter is designed to pass and being adapted to provide an output pulse from each peak (Fig. 2b); and an integrator I fed with the trigger output, the integrator having a charging time constant which is of the order of magnitude of the period of the highest frequency in the output from the filter and a discharge time constant which is substantially longer than the charging time constant; the integrator time constants being adjustable. The integrator output (Fig. 2c) reaches an approximate D.C. voltage proportional to the amount of noise exceeding the predetermined threshold level, and this output is fed to an evaluating arrangement A.
Patent GB-917570-A (GB)
Title: Improvements relating to the introduction of arsenic into germanium
Inventor: DAVIES DEWI ALWYN
IPC: C30B15/00
Filed: 1960-08-08
Abstract: Arsenic is added to germanium in the form of indium arsenide In references to the prior art mention is made of the addition to germanium of arsenic in the form of a tin-arsenic alloy, and the use of a germanium master alloy containing 1% of arsenic.  Use of indium phosphide to add phosphorus to germanium is also mentioned.
Patent GB-932933-A (GB)
Title: Catalyst and process for alkenyl-pyridine production
Inventor: CEVIDALLI GUIDOBALDO
IPC: C07D213/127
Filed: 1959-08-12
Abstract: A catalyst comprising zinc oxide together with iron oxide, chromium oxide, and one or more of the compounds:- aluminium oxide, alkaline-earth metal oxides, and alkali metal oxides, hydroxides, and salts, is employed in the production of alkenyl pyridines from alkyl pyridines (see Group IV(b)).  Preferably the catalyst contains a major proportion of zinc oxide.  It may be composed of ZnO (40-90%), Fe2O3 (5-45%), CaO (1-20%), Al2O3 (1-15%), alkali metal oxide (0,5-10%), and Cr2O3 (0,2-5%).  The catalyst may be prepared by mixing zinc and calcium oxides with hydroxides of aluminium, chromium, and iron, which have been coprecipitated from solutions of their sulphates by means of ammonia, adding concentrated caustic potash solution, and submitting the product to oven-drying until a consistency suitable for extrusion is obtained; the mass is extruded into rods which are then cut into small cylinders and dried at 700 DEG -750 DEG C. in a stream of nitrogen.ALSO:Alkenyl-pyridines are obtained by subjecting a heated vaporized mixture of an alkylpyridine and an inert gas or steam to dehydrogenation in the presence of a catalyst based on zinc oxide together with iron oxide, chromium oxide, and one or more of the following compounds:-aluminium oxide, alkaline-earth metal oxides, and oxides, hydroxides, and salts of alkali metals. Dehydrogenation may take place at 500 DEG -800 DEG C. The alkyl-pyridine may be 2-ethyl-, 3-ethyl-, 4-ethyl-, 2-methyl-5-ethyl-, 4-methyl-5-ethyl-, 2,4-diethyl-, 2,5-diethyl-, or 2-methyl-5-propylpyridine, or it may be a butyl-pyridine.  The preferred catalyst preparations are those containing a major proportion of zinc oxide.  In an example, a mixture of superheated steam and vaporized 2-methyl-5-ethyl pyridine is introduced into a reactor tube and passed over a catalyst containing ZnO (80%), Fe2O3 (18%), K2O (1.2%), and Cr2O3 (0.8%); the dehydrogenation temperature is 580 DEG C. in a first test and 600 DEG C. in a second test.  The effluent vapours are condensed and methyl-vinyl-pyridine is recovered from the condensate. Pyridine, picolines, 3-ethyl pyridine, and 2,5-dimethyl pyridine are obtained as byproducts.  Other examples describe the use of catalysts containing calcium oxide together with the oxides of zinc, iron, chromium, and potassium, and the dehydrogenation of 4-ethyl-pyridine, and 4-methyl-5-ethyl pyridine.
Patent GB-1015227-A (GB)
Title: Process for making tetramethyl lead
IPC: C07F7/24
Filed: 1964-07-03
Abstract: Tetramethyl lead is prepared by the reaction of a monosodium lead alloy with at least one mole of methyl chloride per mole of alloy at a temperature of from - 20 DEG  to 120 DEG  C. in the presence of from 0.01 to 1.5 moles of ammonia per mole of alloy. Advantageously there may also be present up to 0.04 moles of water per mole of alloy provided the amount of water does not exceed 0.3% by weight of the methyl chloride, and up to 0.04 moles per mole of alloy of a monohydroxylic organic compound ROH, wherein R is a hydrocarbon or oxahydrocarbon radical containing 1 to 18 carbon atoms.  Preferably ROH is methanol.  The methyl chloride may contain up to 5 mole per cent methyl iodide. The reactants may be introduced separately or together, all at once or gradually into the reaction vessel.  The ammonia and co-catalyst components may be added as such or in a carrier which may be the methyl chloride or an inert solvent such as toluene or iso-octane which also acts as a thermal stabilizer.  The ammonia may be gaseous or liquid.  1 to 5% of graphite may be present as a lubricant, and the reaction may take place under a pressure of 100-300 p.s.i.g. The product is recovered by conventional methods.
Patent GB-716947-A (GB)
Title: Improvements in or relating to the treatment of animal blood
IPC: A23J3/12
Filed: 1952-11-04
Abstract: Coagulation of animal blood is prevented by addition of Kurrol's potassium metaphosphate, which is produced by heating potassium dihydrogen phosphate.  The Kurrol's potassium metaphosphate may be used in conjunction with Kurrol's sodium metaphosphate, and with promoters of the solution of the Kurrol's salt, e.g. sodium chloride, soluble sodium metaphosphates, sodium pyrophosphates, sodium polyphosphates.  The Kurrol's salt may also be used with salts ordinarily used to prevent coagulation, e.g. orthophosphates, tartrates and citrates.  The amount of Kurrol's salt is from 0.2 to 1 per cent of the weight of blood.  The viscosity of the treated blood is substantially unchanged.  The treated blood, and the corpuscle fraction and plasma portion obtained on centrifuging the treated blood, are used in meat products, especially sausage products; improved distribution of fat is obtained in such products.
Patent GB-298982-A (GB)
Title: A new or improved flexible fabric
IPC: D06N7/04
Filed: 1928-09-27
Abstract: 298,982. Lang-Verte et Cie, G. A. Oct. 18, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Single coatings; coating fabrics in long lengths. -A flexible enamelled fabric having a smooth and glossy surface, and suitable for covering the body-work of motor vehicles, comprises a base of heavy closely woven fabric coated with a thick layer of a varnish having a base of nitrocellulose, cellulose acetate or the like. A coating of 400 to 800 grams of varnish per square metre of surface is necessary. The fabric is unrolled slowly from a drum b and passed over a heating table d. The varnish flows from a vat e through a nozzle extending over the whole width of the fabric, and is spread by a knife f adjustable to regulate the thickness of the coating. The temperature and length of the table are so adjusted that the coating dries before the fabric is rolled on the drum c.
Patent GB-179877-A (GB)
Title: Improvements in or relating to gloves
IPC: A41D19/00
Filed: 1921-10-19
Abstract: 179,877. Urwick, Sir H. Oct. 19, 1921. Gloves.-Purses a for small articles such as electric torches are added to the back of gloves and have spring mouths which may be of elastic. A band c which forms part of the upper part b of the pocket, is preferably elastic and has a pressstud fastening e to engage one or other of two press fastenings g.
Patent GB-503299-A (GB)
Title: Electric sadirons
IPC: D06F75/24
Filed: 1937-07-30
Abstract: 503,299. Electric irons. DEHN, F. B. (Chicago Flexible Shaft Co.) July 30, 1937, No. 27949 /38. Divided out of 503,219. [Class 39 (iii)] ' The heating element 11 is arranged in a cavity in the sole plate 1 and is covered by a plate 12 which is forced downwardly by staked over portions 15 of the marginal edge of the cavity. Mica sheets 13 are arranged on both sides of the element. The marginal edge of the cavity, which is of U-shape is substantially thicker than the bottom thereof. A thermal switch as described in Specification 503,219, [Group XXXVII], may be included.
Patent GB-1119598-A (GB)
Title: Separation of uranium from noble and refractory metals
IPC: C22B60/02
Filed: 1966-06-23
Abstract: Uranium values are separated from refractory and noble metals from which rare earth fission products and plutonium values have been removed by dissolving the impure material in a molten alloy of Cu containing 4-8% Mg, contacting the alloy with a molton salt containing an alkali metal chloride or alkaline earth metal chloride to oxidize the uranium to uranium chloride which dissolves in the melt and contacting the molten salt with a molten Mg alloy to reduce the uranium chloride to uranium which precipitates.  The process is preferably carried out at 725-850 DEG  C. and the Mg alloy may contain 30-65% Zn.
Patent GB-158126-A (GB)
Title: An improved gas-heated radiator
IPC: F24C15/24
Filed: 1919-11-13
Abstract: 158,126. Brierley, W. Nov. 13, 1919. Gas fires.-Asbestos " fuel," to be heated over a gas-ring, is contained in a basket formed of wires united by oxy-acetylene welding. The form shown is of hexagonal shape, the bottom being upwardly coned. The basket may serve as a support for a kettle, &c.
Patent GB-228816-A (GB)
Title: Machines for feeding separate sheets to a printing press or other like machine
IPC: B65H3/06
Filed: 1923-11-06
Abstract: 228,816. Marks, E. C. R., (Swart & Co., Inc., G. R.). Nov. 6, 1923. Sheet separators and registering- devices; feed-tables: pile supports. -A sheet-feeding apparatus of the kind described in Specification 228,618 is constructed so that the casing 36, which supports the. sheet separating and forwarding devices and the operating mechanism therefor, can be adjusted on the feed board 25, so that the machine can be used for hand or automatic feed. A bank of feathered sheets is passed from an upper board 30 by tapes 29, and the sheets are separated out and advanced to sheet-forwarding grippers 129 by combing rollers arranged in the casing 36. These combing rollers are actuated by feeler-controlled toggle mechanism as described in Specification 228,815. As shown in Fig. 1, the automatic feed mechanism is in operative position, but as shown in Fig. 2 the casing 36 has been moved to the left over the board 25 by means of a rack 37 operable by pinions 41 on a hand-operated shaft. The frame 43 on which the grippers slide is held out of operation by a catch 45 when the machine is hand-fed.
Patent GB-390230-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D1/14
Filed: 1931-10-10
Abstract: 390,230. Slicing-machines. FITZPATRICK, H. D., 94, Hope Street, Glasgow. -(Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen, and Berkel, C. F. M. van ; 33, Boezemsingel, Rotterdam, Holland.) Oct 10, 1931, No. 28189. [Class 28 (ii).] In a slicing-machine having a friction drive, e.g. from an electric motor, the driven member is provided with a pneumatic tyre. As shown, the flywheel 7 is provided with a pneumatic tyre 11 having a valve 12, and is driven frictionally by a motor 9 pivotally connected to the machine frame at 14 and adjustably held against the tyre by a wing-screw 15. When the machine is to be operated by hand, the handle 8 is moved from the dotted-line housed position, to the full-line operative position. The motor may be arranged to rotate the knife directly by arranging the tyre on an annular rim or pulley on the back of the knife, or on a pulley on the knife shaft. The carriage may be reciprocated by mechanical connection with the knife, or may be reciprocated independently by hand. According to the Provisional Specification, the pneumatic tyre may be provided on the driving-member, or on both the driving and driven members.
Patent GB-535794-A (GB)
Title: Improvements in or relating to domestic ovens
IPC: F24B1/00
Filed: 1939-10-21
Abstract: 535,794. Domestic ovens. SENTRY BOILER CO., Ltd., and WOOD, P. N. Oct. 21, 1939, No. 28409. [Class 126] In a domestic oven of the kind comprising an internal flue 44 for the passage of heating gases, which escape at 48, a pipe 54 opens at the top into the flue and is connected at the bottom to the smoke oulet 60 of a domestic boiler &c. the pipe 54 may have a damper 108 and may be enclosed by a channel-shaped member 114. The oven liner 34 is secured to the removable back plate of the casing 10 and the casing has cleaning apertures 78 at the top and one, 80, at the bottom. Specification 443,346 is referred to.
Patent GB-821391-A (GB)
Title: Improvements in vacuum brake systems and quick release valves used therein
IPC: B60T13/46
Filed: 1957-09-11
Abstract: 821,391. Vacuum brake systems. VACUUM BRAKE CO. Ltd. Sept. 11, 1957 [Sept. 12, 1956], No. 28641/57. Class 103 (1). A vacuum brake system for rail and road vehicles includes a vacuum pipe 2 communicating with a vacuum brake 26, a vacuum reservoir 21, and a vacuum reservoir 14 via a guide release valve 1; when the pressure in pipe 2 is at or near atmospheric the brakes are applied and when reservoir 21 is allowed to create a mixed vacuum in pipe 2 the valve 1 automatically operates to connect reservoir 14 to pipe 2 to create a vacuum surge to rapidly release the brakes. A piston 6, Fig. 1, controlled by diaphragms 7, 8 clamped between quick-release valve casing portions 3, 4, 5, is sealed against an inner casing wall 9 by ring 10 and is movable up and down by pressure differentials in chambers B, C, D; on rising a projection 11 engages and raises a valve 12, 13 to connect chambers A and D. On brake application, pressure in pipe 2 and chamber D moves piston 6 down, its portion 17 forcing valve 13 against seat 15 and a valve 19 closes bores 18 in valve 12, 13, pressures in chambers B, D equalizing through bores 16. For brake release, the reservoir 21 is connected to pipe 2 by driver's valve 30 creating a mixed vacuum in pipe 2, defined as being of the order of 18-19 inches of mercury, chamber D and eventually, through bores 16, chamber B, causing piston 6 to move up to raise valve 12 to connect reservoir 14 to pipe 2, the vacuum surge created is propagated to the next vehicle F to automatically operate its quick-release valve 1a to connect its reservoir 14 through chamber A to pipe 2 and so on for the remaining vehicles to release the brakes simultaneously. The brake cylinder 26 with the auxiliary reservoir 27 is connected to the pipe 2 through throttle valve 28, the reservoir 27 can be vented by valve 29. The system is evacuated during running by a generator 22 through non-return valve 23 and air filter 24, the vacuum created in chamber D and B and atmospheric pressure in chamber C causes piston 6 to move down to its lower position, reservoir 14 being exhausted through ports 18 until closed by valve 19 which is held open by spring 20 until the operational vacuum has been created in reservoir 14.
Patent GB-247328-A (GB)
Title: Improvements relating to the dyeing of textile fabrics
IPC: D06P1/673
Filed: 1924-11-29
Abstract: 247,328. Eberlein, W., and Colloisil Colour Co., Ltd. Nov. 29, 1924. Ink.-Inks for printing textiles are prepared by mixing a suspension of an artificial or natural fixing silicate or earth with a solution of a basic dyestuff, preferably in presence of a protective colloid. In an example green earth is treated with water in a colloid mill, preferably with albumen, casein, or glue as protective colloid, Brilliant Green added, and the mixture again worked in the mill.
Patent GB-707284-A (GB)
Title: A device for perforating paper webs transversely
Inventor: PAUL WALTER
IPC: B26F1/10
Filed: 1952-11-14
Abstract: 707,284. Perforating paper webs. WINDMOLLER, A., and HOLSCHER, F., [trading as WINDMOLLER & HOLSCHER, KOMMANDIT-GES]. Nov. 14, 1952, No. 28766/52. Class 31 (1) In apparatus for perforating paper webs by means of knives 3 co-operating with a counter drum 2, the knives are mounted on a shaft 5 which is driven from a driven shaft 9 by means of an adjustable slot and crank transmission 10 to 13, and the drum 2 and shaft 5 are carried by stands 14, 15 which are movable perpendicularly to the shaft 5 during the operation of the apparatus by means of a hand wheel 16, worms and wormwheels 18, 19 and screw-threaded shafts 20 so that the distance between succeeding perforations can be altered. The drum 2 is mounted in eccentric bushings 22 which are adjustable by a hand wheel 23 so that the depth of cut can be varied.
Patent GB-244728-A (GB)
Title: Improvements in the manufacture of powdered or dried milk products
IPC: A23C1/16
Filed: 1925-11-16
Abstract: 244,728. Christensen, N. H. Dec. 18, 1924, [Convention date]. Preserving milk.-Prior to the desiccating operation in the manufacture of dried milk a part of the calcium content of the liquid milk is precipitated by the addition of a soluble oxalate. Thus, the calcium may be precipitated by the addition of sodium oxalate, and after the removal of the precipitate small quantities of sodium citrate and sodium carbonate or an alkali may be added before the milk is desiccated as by passing it in a thin film over a heated roller. The calcium may be removed from a part only of the milk and then this part be added to the bulk of the liquid. The precipitated calcium need not be removed but may be left in the milk which is to be dried.
Patent GB-207351-A (GB)
Title: Incandescent electric lamp
IPC: H01K1/44
Filed: 1922-10-24
Abstract: 207,351. Cameron, W. J. Oct. 24, 1922. Dental and surgical lamps.-In an electric lamp of small dimensions for dental &c. purposes, the light bulb is disposed within an insulated-casing and a cushioning plug adjacent to the rear end serves as an abutment for the bulb. The Figure shows a lamp bulb 8, casing 6 and felt plug 14, the conductors 10, 11 being separated and forced against the inner surface of the casing 6 by the plug 14. The bulb 8 is formed with a projection 13 separating the conductors 10, 11 and entering the adjacent face of the plug 14. An insulating filling 15 of plaster of paris &c. maintains the conductors 10, 11 separated and keys into an annular corrugation 16 in the casing.
Patent GB-1078306-A (GB)
Title: Improvements in and relating to sliding clasp fasteners
IPC: A44B19/32
Filed: 1964-07-15
Abstract: 1,078,306. Sliding clasp fasteners. F. MULKA. July 15, 1964 [July 15, 1963], No. 29175/64. Heading E2S. A sliding clasp fastener comprises a pair of elongated strips 1 each having an upstanding portion extending along one edge thereof the upstanding portions having inwardly directed mutually sealingly engageable side faces 9 1  and outwardly directed side faces along which are provided a plurality of outer members 3 having recesses therein, a slider member 7 of generally inverted U shaped cross section which embraces the upstanding portion and outer members and is slidaible therealong to open and close the fastener; and a plurality of interconnected fastening members 6 of generally inverted U shaped cross section over which the slider member is slidable, which fastening members in the closed condition of the fastener are disposed along the length of the elongated strips, said slider member upon sliding movement to close the fastener being adapted to move the outer members towards each other and to urge the fastening members to a position in which they embrace the upstanding portions and outer members of both said strips, and fingers 6 1  carried by said fastening members engage in the recesses in the outer members whereby the inwardly directed side faces of the upstanding portions are retained in sealing engagement by said fastening members. In the construction shown the fastening members 6 are connected together by a flexible connecting member 8 and the strips are reinforced by inextensible tapes 2 to prevent stretching in the longitudinal direction of the tapes and the member 8 is an extension of the left hand tape 2 so that the fastening members are linked to the left hand strip 1. The member 8 includes a fold 8 1  lying on top of the upstanding portions of the strips I when the fastener is closed; the member 8 is perforated to facilitate bending along a predetermined line. The outer members 3 are connected to each strip 1 by means of a bead 4 of the strip which engages grooves in the outer members. The slider is so constructed that it first engages the pairs of members 3 by means of lead-in portions 7 2  which press the members towards each other and then hold them in such position by tongue portions 7 3 ; there is a pair of tongue portions at each end of the slider member. A track 7 1  which is curved in a vertical plane is also provided along each side of the slider member and is arranged so that the bottoms of the fastening members 6 rest upon it, the track moving the fastening members into and out of engagement with the members 3 depending upon the direction of movement of the slider member. In a modification instead of the member 8 being connected to one of the tapes 2 it is a separate member.